5 spline drives specified in ANSI B107 specifications. Standard sizes of square drives around the world include 1⁄ 4, 3⁄ 8, 1⁄ 2, 3⁄ 4, 1, 1 + 1⁄ 2, 2 + 1⁄ 2 and 3 + 1⁄ 2 in (6.4, 9.5, 12.7, 19.1, 25.4, 38.1, 63.5 and 88.9 mm) square drive sizes (a de facto international standard with no metric equivalents ) along with some lesser used drivers such as 5⁄ 8-inch square drive, and both No. These are attached to the driving tool via a male/female square connection fitting (called the square drive). The basic contemporary form of socket is hexagonal, referred to as '6-point' for the pointed intersections where its six solid sided facets meet. Some lesser known hybrid drivers include striking wrench tools with square drive, and hydraulic impact wrenches (typically powered by on site hydraulic power such as present with military tanks, and many rail car applications). Other common methods of driving sockets include pneumatic impact wrenches, hydraulic torque wrenches, torque multipliers and breaker bars. A ratchet incorporates a reversible ratcheting mechanism which allows the user to pivot the tool back and forth to turn its socket instead of removing and repositioning a wrench to do so. The most prevalent form is the ratcheting socket wrench, often informally called a ratchet. Socket set with ratchet (above), four hex sockets and a universal joint.Ī socket wrench (or socket spanner) is a type of wrench (spanner in British English) that inserts into a socket to turn a fastener, typically in the form of a nut or bolt.

1 4 inch sockets sets